Dust Levels when using slag
Slag is quenched from its molten state with cold water giving each particle a brittle structure with distinct fracture lines.
Upon impact with the surface the slag particle breaks down into several pieces. Hence the dust levels are high and the product doesn’t lend towards recycling.
Garnet is an extremely hard stone with low friability, hence a low breakdown rating allowing 10 or more times recyclability. Garnet is very dense with a high specific gravity and any broken down particles fall out of the air immediately.
(We often notice that on slag projects the drift of spent slag and debris travels around 120 feet down wind and only around 40 feet on similar Garnet projects.)
By switching to GMA Garnet, you will notice a dramatic difference in dust levels – your workers will go home cleaner and will have much better job satisfaction!
Heavy Metal Content
Garnet as a natural stone has extremely low levels of heavy minerals.
Coal slag is a by-product of the metals refining industry and contains high levels of Toxic Heavy Metals, so much so that many authorities are banning the use of slag purely because of the hazardous nature of the toxins in the virgin slag material. Some states classify slag as a hazardous waste even before it is blasted – the new slag in the bag is hazardous waste! Please be careful when using slag.